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Subject[PATCH 2/4] PCI: Add pci_check_platform_service_irqs
Date
Adding method pci_check_platform_service_irqs to check if platform
has registered method to proivde dedicated IRQ lines for PCIe services
like AER/PME etc.

Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
---
include/linux/pci.h | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index c28f575..8eb6470 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2271,6 +2271,30 @@ static inline bool pci_ari_enabled(struct pci_bus *bus)
}

/**
+ * pci_check_platform_service_irqs - check platform service irq's
+ * @pdev: PCI Express device to check
+ * @irqs: Array of irqs to populate
+ * @mask: Bitmask of capabilities
+ *
+ * Return value: Bitmask after clearing platform supported service
+ * bits
+ */
+static inline int pci_check_platform_service_irqs(struct pci_dev *dev,
+ int *irqs, int mask)
+{
+ struct pci_host_bridge *bridge;
+
+ if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
+ return -EINVAL;
+
+ bridge = pci_find_host_bridge(dev->bus);
+ if (bridge && bridge->setup_platform_service_irq)
+ return bridge->setup_platform_service_irq(bridge, irqs, mask);
+ else
+ return -EINVAL;
+}
+
+/**
* pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain
* @pdev: PCI device to check
*
--
1.7.1
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